Running XP 64-bit pro on a mac pro 2008 in bootcamp. I am trying to use a USB headset with a mic, and use my speakers for primary audio (yamaha sound stick via optical SDIF out).... I plugged in my generic Gigaware headset from Radio Shack, and on the volume control panel, it shows some data regarding it (c-audio blah blah) and the volume settings for it in the options. The other 3 options were Realtek audio In, Realtek Audio out, Realtek digital audio out. The audio out cuts out, from the game or apps to the speakers, working fine on the headset. I run the Realtek control panel, and the surround test still plays through the speakers, but no app's sound will. Once I yanked the USB and rebooted, I got audio back (but not until rebooting). Is it a PC thing where a controller determines either headphones or speakers but not both... or is the headset I have doing this silliness? Any suggestion appreciated.